[Bug target/32441] ICE in expand_expr_real_1, at expr.c:7109

[pinskia at gcc dot gnu dot org]

--- Comment #3 from pinskia at gcc dot gnu dot org  2007-06-21 08:58 ---
Patch which fixes this bug:
Index: builtins.c
===
--- builtins.c  (revision 125776)
+++ builtins.c  (working copy)
@@ -4649,7 +4649,18 @@
 std_expand_builtin_va_start (tree valist, rtx nextarg)
 {
   tree t;
-  t = make_tree (sizetype, nextarg);
+  /* Use the correct type/mode for make_tree, can't use a pointer type as
+ PLUS_EXPR is not appliable to pointers.  type_for_mode might return
+ a type with a different mode (SI vs PSI) so we might need to convert
+ to the different mode.  */
+  tree type = lang_hooks.types.type_for_mode (TYPE_MODE (ptr_type_node),
true);
+  if (TYPE_MODE (type) != GET_MODE (nextarg))
+{
+  rtx reg = gen_reg_rtx (TYPE_MODE (type));
+  convert_move (reg, nextarg, false);
+  nextarg = reg;
+}
+  t = make_tree (type, nextarg);
   t = fold_convert (ptr_type_node, t);

   t = build2 (MODIFY_EXPR, TREE_TYPE (valist), valist, t);


-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEW
 Ever Confirmed|0   |1
   Last reconfirmed|-00-00 00:00:00 |2007-06-21 08:58:35
   date||


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32441

[Bug target/32441] ICE in expand_expr_real_1, at expr.c:7109

[rguenth at gcc dot gnu dot org]

--- Comment #4 from rguenth at gcc dot gnu dot org  2007-06-21 11:00 ---
You shouldn't introduce calls to langhooks.  Why not use mode_for_size?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32441

[Bug target/32441] ICE in expand_expr_real_1, at expr.c:7109

[pinskia at gmail dot com]

--- Comment #5 from pinskia at gmail dot com  2007-06-21 13:47 ---
Subject: Re:  ICE in expand_expr_real_1, at expr.c:7109

 You shouldn't introduce calls to langhooks.  Why not use mode_for_size?

I was just copying code from fold-const.c. I have the mode already, I
need an integer tree type that matches that mode.  So really
mode_for_size will not give me any more information.


-- Pinski


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32441

[Bug target/32441] ICE in expand_expr_real_1, at expr.c:7109

[rask at sygehus dot dk]

--- Comment #1 from rask at sygehus dot dk  2007-06-20 21:36 ---
Created an attachment (id=13750)
 -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13750action=view)
Preprocessed testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32441

[Bug target/32441] ICE in expand_expr_real_1, at expr.c:7109

[pinskia at gcc dot gnu dot org]

--- Comment #2 from pinskia at gcc dot gnu dot org  2007-06-20 22:05 ---
This is more likely related to pointer_plus than dataflow.

Looking into it.


-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

 CC||pinskia at gcc dot gnu dot
   ||org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32441